Check if your microphone is physically connected and powered on

Before you adjust any settings, make sure your microphone is actually plugged in. If you're using a USB microphone, connect it to an open USB port on your computer. If it's a 3.5mm jack microphone, plug it into the audio input jack (usually marked with a microphone icon). Some microphones have their own power switch or require batteries — check the manual or look for a switch on the device itself.

Wait a few seconds after plugging in a USB microphone. Windows and Mac both need time to recognize new hardware. You should see a notification or hear a sound indicating the device was detected. If nothing happens, try a different USB port or restart your computer.

Key Takeaways

  • Check that your microphone is physically connected and powered on before changing any software settings.
  • In Windows, open Settings > Privacy & Security > Microphone and toggle the microphone on, then check individual app permissions.
  • On Mac, go to System Settings > Privacy & Security > Microphone and grant permission to the apps that need it.
  • If your microphone still doesn't work, restart your computer and check the audio input device in your sound settings.
  • Some apps require you to manually select your microphone from a dropdown menu in their own settings before they can use it.

Enable microphone access in Windows Settings

Open the Windows Settings app by pressing the Windows key and typing "Settings," then pressing Enter. Navigate to Privacy & Security in the left sidebar, then click Microphone. At the top, you'll see a toggle switch labeled "Microphone." Make sure it is turned on (it should be blue and switched to the right).

Below that toggle, you'll see a list of apps with permission to use your microphone. If an app you want to use is listed and its toggle is off, turn it on. If the app isn't listed yet, it will appear here the first time it tries to access the microphone — you'll get a permission prompt asking you to allow or deny access.

Enable microphone access on Mac

Click the Apple menu in the top-left corner and select System Settings. In the sidebar, click Privacy & Security, then select Microphone. You'll see a list of apps that have requested microphone permission. Check the box next to any app you want to use your microphone with.

If an app you need isn't listed, open that app and try to use the microphone feature. You'll receive a prompt asking for permission — click Allow. After you grant permission, the app will appear in the System Settings microphone list.

Select your microphone as the default input device

In Windows, right-click the speaker icon in the system tray (bottom-right corner) and select Open Volume mixer. Scroll down to find App volume and device preferences and click it. You can set a default microphone for your whole system here, or choose a different microphone for specific apps. Click the dropdown under "Input" to see all connected microphones and select the one you want to use.

On Mac, click the Apple menu, go to System Settings, then Sound. Click the Input tab. You'll see a list of all connected microphones. Click the one you want to use as your default. A checkmark will appear next to it.

Test your microphone to confirm it's working

In Windows, open Settings > Privacy & Security > Microphone and scroll down to Allow apps to access your microphone. Look for Volume mixer in the list and turn it on if it's off. Then open the Volume mixer app from your Start menu. Speak into your microphone — you should see the input level bars move in response to your voice.

On Mac, open System Settings > Sound > Input. Speak into your microphone and watch the input level meter on the right side of the screen. It should show movement when you speak. If the meter doesn't move, your microphone may not be working or may not be selected as the default input device.

Troubleshoot if your microphone still isn't working

Restart your computer first — this fixes many microphone issues. After restart, check that your microphone is still connected and that Windows or Mac recognizes it in the sound settings. If you're using a USB microphone, try plugging it into a different USB port. If you're using a 3.5mm jack, make sure you're plugging into the input jack (not the output/headphone jack).

Check whether the microphone works in a different app. If it works in one app but not another, the problem is likely that app's settings, not your microphone or your computer. Open that app's settings and look for an audio or microphone option — you may need to manually select your microphone from a dropdown menu. If your microphone doesn't work in any app, restart your computer again and verify the microphone is set as your default input device in Windows Settings or Mac System Settings.

Frequently Asked Questions

Why does my microphone show as connected but I can't hear myself?

You're likely not supposed to hear yourself — most apps don't play your own voice back to you by default. Test your microphone by recording a short voice memo or opening a video call app and asking someone else if they can hear you. If they can, your microphone is working correctly.

Can I use multiple microphones at the same time?

You can have multiple microphones connected, but only one can be your default input device at a time. You can switch between them in Sound settings. Some apps let you choose a specific microphone in their own settings, which overrides the system default for that app only.

My microphone was working yesterday but stopped today. What happened?

Check that it's still plugged in and powered on. Then restart your computer. If it's a USB microphone, try a different USB port. Open your sound settings and confirm the microphone is still set as your default input device — sometimes Windows or Mac switches to a different device after an update.

Do I need to install drivers for my microphone?

Most USB microphones work without drivers on Windows and Mac. If your microphone came with a CD or read link for drivers, check the manufacturer's website to see if drivers are needed for your model. If your microphone isn't recognized after plugging it in and restarting, installing the official drivers may help.

What's the difference between the microphone jack and the headphone jack?

The microphone jack (input) is where you plug in a microphone. The headphone jack (output) is where you plug in speakers or headphones. They look similar but serve opposite purposes. Plugging a microphone into the headphone jack won't work. Check your computer's manual or look for icons next to the jacks — the microphone icon marks the input jack.